CN1179019A - Transverse magnetic mode medium resonator and transverse magnetic mode medium filter using it and diplexer - Google Patents
Transverse magnetic mode medium resonator and transverse magnetic mode medium filter using it and diplexer Download PDFInfo
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- CN1179019A CN1179019A CN97117800.3A CN97117800A CN1179019A CN 1179019 A CN1179019 A CN 1179019A CN 97117800 A CN97117800 A CN 97117800A CN 1179019 A CN1179019 A CN 1179019A
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- 239000010409 thin film Substances 0.000 claims description 15
- 239000003989 dielectric material Substances 0.000 claims description 7
- 238000005476 soldering Methods 0.000 abstract 1
- 239000002609 medium Substances 0.000 description 171
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- 239000002184 metal Substances 0.000 description 3
- 239000002887 superconductor Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 2
- 229930006000 Sucrose Natural products 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012120 mounting media Substances 0.000 description 2
- 239000005720 sucrose Substances 0.000 description 2
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- H—ELECTRICITY
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- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/10—Dielectric resonators
- H01P7/105—Multimode resonators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
- H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
- H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters
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Abstract
A dielectric resonator designed so that there is substantially no loss in a conductor on the surface of a casing forming a shielded cavity, and so that the unloaded Q and the resonant frequency can be changed independently of each other. A cylindrical dielectric block having a pair of electrodes formed respectively on its two opposite surfaces is disposed in a metallic shielded-cavity casing so that one of the electrodes is in contact with an inner bottom surface of the shielded-cavity casing. This electrode is electrically connected to the shielded-cavity casing by soldering or the like.
Description
The present invention relates to horizontal magnetic (TM) mould dielectric resonator, and relate to the TM mould dielectric filter and the TM mould dielectric duplexer of this kind of utilization resonator.
As the dielectric filter of utilization TM mould dielectric resonator, having as shown in figure 13, the dielectric filter of structure is well-known.With with short circuit type TM
110The medium block of mould dielectric resonator is in the mode of the whole combination of cross pattern, with each dielectric resonator formation dual-mode resonator as shown in figure 13.When forming with the size that equates with such generic media resonator, such structure makes a TM mould dielectric resonator can have the function of two TM mould dielectric resonators.
With reference to Figure 13, dielectric filter 101 have be arranged in one row and opening four TM bimodulus dielectric resonators 102,103,104 and 105 in the same direction.With metallic plate 106 and 107 near these resonators to cover these openings.
As shown in figure 13, TM bimodulus dielectric resonator 102 has cavity housing 102a and the cross medium block 102XY that opening is all arranged with the back in front.Cavity housing 102a forms by identical dielectric material is whole with cross medium block 102XY.Except that the edge of opening of front and back, on the outer surface of cavity housing 102a, form conductor 102b.The cavity housing 102a that has conductor 102b forms the shielding cavity.Medium block 102XY is formed by horizontal component 102X and vertical component 102Y, as shown in figure 13.Like this, form a TM bimodulus dielectric resonator 102 as a two-stage resonator.Each TM bimodulus dielectric resonator 103,104 and 105 has the structure identical with TM bimodulus dielectric resonator 102.
To import ring 108 and export ring 109 and be installed on the plate 106.Input ring 108 and output encircle 109 and link to each other with external circuit by coaxial fitting (not shown).
Be used for the dielectric resonator of this dielectric filter, by the resonance frequency of the size decision resonator of the size of cavity and medium block.
For example, has single perpendicular media block structured general T M
110Under the situation of mould dielectric resonator, if when the height of the width of mounting medium piece, thickness and height and cavity, increase the width of cavity, resonance frequency step-down so.If when the size of fixing cavity, increase the width or the thickness of medium block, so the resonance frequency step-down.Equally, work as fixed frequency, can increase the nonloaded Q of dielectric resonator by the height that increases medium block.
In this case, if increase the height of medium block, must increase the height of cavity so.Because active current flows through TM
110Conductor on the hollow shell surface in the mould dielectric resonator is so if increase the size of cavity housing, the loss in the upper conductor of hollow shell surface becomes big so.Yet the increase of comparing the nonloaded Q that obtains by the increase cavity with the loss in the upper conductor of hollow shell surface is enough big.So if increase the height of medium block, nonloaded Q uprises so.
If can reduce the loss in the upper conductor of hollow shell surface, when the height of restriction medium block increases, can increase nonloaded Q so.Therefore, need a kind of dielectric resonator of design to reduce the loss in the upper conductor of hollow shell surface.
In TM bimodulus dielectric resonator as shown in figure 13, when the vertical and horizontal component of regulating medium block according to preset frequency big or small, also determined the size of cavity.Therefore, in order to increase nonloaded Q, must increase the width and the height of cavity, the result causes the increase of the overall size of dielectric filter.In addition, if when the size of mounting medium piece, increase the size of cavity, resonance frequency step-down so.Therefore, if increase the size of cavity, must reduce the width or the thickness of medium block so.So in traditional TM bimodulus dielectric resonator, it is very difficult changing each nonloaded Q and frequency independently.
Consider described problem, one object of the present invention is, a kind of dielectric resonator is provided, and does not have loss basically in its conductor on the hollow shell surface, and can change nonloaded Q and resonance frequency independently of each other.
Another object of the present invention is, a kind of dielectric filter and dielectric duplexer with improved nonloaded Q and less thickness is provided.
In order to achieve the above object, according to a first aspect of the invention, a kind of TM mould dielectric resonator is provided, it comprises the shielding cavity housing with conductivity, be arranged on the medium block that shields in the cavity housing with at least one, wherein on two surfaces relative to each other of medium block, form electrode, and will form in the above on the surface, inside that in two surfaces of electrode one is placed on shielding cavity housing.
In this structure, with the corresponding shielding cavity of the cavity housing housing of traditional TM mould dielectric resonator in, do not have active current to flow through basically.
According to a second aspect of the invention, one of a plurality of above-mentioned medium block are overlapped on another, thereby at least one surface that forms in the above in two surfaces of each medium block of electrode contacts with the adjacently situated surfaces of another medium block.
By using this structure also to can further improve the nonloaded Q of resonator according to a first aspect of the invention.
According to a third aspect of the invention we, one of a plurality of above-mentioned medium block are overlapped on another, thus form in the above in two surfaces of each medium block of electrode at least one is relative with the adjacently situated surfaces of another medium block, simultaneously spaced-apart.
This structure makes dielectric resonator of the present invention as the multistage resonant device.
According to a forth aspect of the invention, use the thin-film multilayer electrode that alternately overlaps to form by thin film conductor and thin film dielectrics.
If form electrode in this way, the loss in the electrode that can reduce so on the upper and lower surface of the medium block of according to a first aspect of the invention resonator, to form, thus further improve nonloaded Q.
According to a fifth aspect of the invention, medium block is made columniform.
Therefore, relative with the loss in the electrode on the polygon prism medium block, can reduce loss at electrode edge.
According to a sixth aspect of the invention, above-mentioned TM mould dielectric resonator and input and output device outside are coupled.
Has high nonloaded Q by the dielectric filter of making in this way.
According to a seventh aspect of the invention, coupling device is arranged in the middle of TM mould dielectric resonator and input and the output device.
By changing, add or remove the mode of coupling device, can easily control the degree of coupling between TM mould dielectric resonator and input and the output device.
According to an eighth aspect of the invention, coupling device is arranged between a plurality of TM mould dielectric resonators.
By changing, add or remove the mode of coupling device, can easily control the degree of coupling between the TM mould dielectric resonator.
According to a ninth aspect of the invention, coupling device comprises the electrode slice that is made of dieelctric sheet and the electrode that forms on a surface of dieelctric sheet.
The size of dielectric constant and electrode slice by suitable selection medium can easily obtain the required degree of coupling.
According to the tenth aspect of the invention, in a plurality of TM mould dielectric resonators, relative with the resonance frequency of other TM mould dielectric resonator, be increased in the first order under the state of working independently and the resonance frequency of afterbody, thereby when resonator forms dielectric filter, the resonance frequency of TM mould dielectric resonator is equated.
According to an eleventh aspect of the invention, above-mentioned a plurality of TM mould dielectric filters are combined have a TM mould dielectric filter of first frequency band with formation, with the 2nd TM mould dielectric filter with second frequency band, and first frequency band and second frequency band are different.
In this way, can obtain having the dielectric duplexer of high nonloaded Q.
According to a twelfth aspect of the invention, make the shape of the TM mould dielectric resonator that forms a TM mould dielectric filter different, so that first frequency band and second frequency band are different with the shape of the TM mould dielectric resonator that forms the 2nd TM mould dielectric filter.
Therefore, need not increase and be used for the circuit of mobile frequency band relatively, and under the situation of the identical TM mould dielectric resonator of utilization shape, then need such circuit.
According to a thirteenth aspect of the invention, a TM mould dielectric filter is used as emission filter, and the 2nd TM mould dielectric filter is used as receiving filter.
In this way, the TM mould dielectric duplexer that can obtain being used for transmitter-receiver and have high nonloaded Q.
Figure 1A is a part excision perspective view of representing the dielectric filter of the first embodiment of the present invention;
Figure 1B is the profile that the straight line A-A along Figure 1A is got;
Fig. 2 A is a part excision perspective view of representing the dielectric filter of the second embodiment of the present invention;
Fig. 2 B is the profile that the straight line A-A along Fig. 2 A is got;
Fig. 3 A is the part excision perspective view of a kind of change of the dielectric filter shown in Fig. 2 A and the 2B;
Fig. 3 B is the profile that the straight line C-C along Fig. 3 A is got;
Fig. 4 A is a part excision perspective view of representing the dielectric filter of the third embodiment of the present invention;
Fig. 4 B is the profile that the straight line D-D along Fig. 4 A is got;
Fig. 5 A is a part excision perspective view of representing the dielectric filter of the fourth embodiment of the present invention;
Fig. 5 B is the profile that the straight line E-E along Fig. 5 A is got;
Fig. 6 comprises the plane graph of inside of the upper and lower part of the dielectric filter shown in Fig. 5 A and the 5B;
Fig. 7 is the profile of a kind of change of the dielectric filter shown in Fig. 5 A, 5B and 6;
Fig. 8 is a part excision perspective view of representing the dielectric duplexer of the fifth embodiment of the present invention;
Fig. 9 is the exploded perspective illustration of dielectric duplexer shown in Figure 8;
Figure 10 is the profile of a kind of change of the dielectric duplexer shown in Fig. 8 and 9;
Figure 11 is the profile of another change of the dielectric duplexer shown in Fig. 8 and 9;
Figure 12 is a cutaway view of representing the dielectric filter of the sixth embodiment of the present invention;
Figure 13 is the exploded perspective illustration of traditional TM mould dielectric filter.
With reference to Figure 1A and 1B, the dielectric filter of the first embodiment of the present invention is represented in narration.Figure 1A is the part excision perspective view of dielectric filter 1, and Figure 1B is the profile that the straight line A-A along Figure 1A is got.
Shown in Figure 1A and 1B, dielectric filter 1 has the medium block 2 that is installed in the housing 5 that is made of metal and forms the shielding cavity.
Medium block 2 is the cylindrical elements that formed by dielectric material.Electrode 3 and 4 forms on two apparent surfaces of medium block 2.Place medium block 2, thereby electrode 4 is contacted with the inner bottom surface of shielding cavity housing 5.Be electrically connected by mode fixed electrode 4 such as welding and with shielding cavity housing 5.The electrode 3 of medium block 2 separates equably in the face of the inside top surface of shielding cavity housing 5 and with this surface.When high-frequency signal is input to the dielectric filter 1 of such structure, between the electrode 3 and 4 of medium block 2, generates electric field, and generate magnetic field along the periphery of medium block.As a result, approach TM in the electromagnetic field distribution
010Under the situation of mould, electromagnetic field is concentrated and is limited in the medium block 2.At this moment, medium block 2 plays the effect of one-level dielectric resonator.
The a pair of coaxial fitting that will be used for outside input and output is contained in the sidewall sections of shielding cavity housing 5.Such as, be electrically connected with electrode slice 7 with the central electrode of lead coaxial fitting 6.
Use such as the sheet of insulation of resin and the electrode film that on the upper surface of sheet of insulation, forms and make each electrode slice 7.On the lower surface of sheet of insulation, do not form electrode film.Electrode slice 7 is arranged on and the upper surface attached to medium block 2 on the electrode 3 that forms.To there be the lower surface of the electrode slice 7 that electrode film forms in the above to contact with electrode 3.
The work of Gou Zao dielectric filter 1 is as described below like this.
High-frequency signal is input to a coaxial fitting 6.The electric capacity of the insulating material between the electrode film on the upper surface of the electrode 3 of medium block 2 and an electrode slice 7 linking to each other with the central electrode of coaxial fitting 6 plays the effect of coupling between the central electrode of coaxial fitting 6 and medium block 2.By such coupling, medium block 2 is along with input signal resonance.Therefore, the electric capacity by another electrode slice 7 and another coaxial fitting 6 output signals by linking to each other with electrode film on this electrode slice 7.
The thickness of Gou Zao dielectric filter can be than utilization short circuit type TM like this
110The thickness of the traditional sucrose filter of mould dielectric resonator is much smaller.By with utilization short circuit type TM
110The resonance frequency and the nonloaded Q of the dielectric filter of the factor decision present embodiment that the traditional sucrose filter of mould dielectric resonator is identical.That is,, and determine nonloaded Q by the height of medium block by area of section decision resonance frequency along the plane vertical with short transverse.Yet, in the present embodiment, do not have active current to flow through the side of the shielding cavity housing corresponding basically with traditional cavity housing.Therefore, the deterioration that does not cause nonloaded Q to cause basically owing to this part.So, can be restricted to the increase that obtains the required necessary medium block height of nonloaded Q, therefore limit the increase of the height of whole dielectric filter.
Just use the cylinder shape medium piece to narrate embodiments of the invention.Yet, can only not adopt this cylinder shape medium piece, and can adopt medium block, as long as they have and two electrodes 3 shown in Figure 1 and 4 corresponding electrode with Any shape.
Yet, in the operable medium block, adopting cylinder shape medium piece advantageous particularly according to the present invention at these such as the medium block 2 of the foregoing description, its reason is as follows.Have in the above in the surface of this cylinder shape medium piece that electrode forms, the distance of the edge from the center of circle to the circuit (that is periphery) is constant.In the medium block of other multi-edge column-shaped, from the center to the distance on polygonal summit be different from the center to the distance of other marginal portion.Therefore, in such medium block, the appearance potential difference is to produce electric current along the polygonal electrodes edge, and the result produces loss in electrode.On the contrary, in the cylinder shape medium piece, because the center of circle and the distance that forms in the above between the circumferential end on surface of electrode are constant, so such potential difference can not cause that basically electric current flows through.In this case, consequent loss is advantageously little.Because the columniform effect of above-mentioned employing, so can cause the serious problems of loss at electrode edge with superconductor with superconductor as electrode 3 and 4.If superconductor is used as electrode 3 and 4, the dielectric resonator or the filter that can obtain to have high nonloaded Q so.
Below with reference to Fig. 2 A and 2B, the narration second embodiment of the present invention.Fig. 2 A is a part excision perspective view, and Fig. 2 B is the profile that the center B-B along Fig. 2 A is got.Represent in the present embodiment and the first embodiment components identical with identical label, and no longer be described in detail.
With reference to Fig. 2 A and 2B, dielectric filter 11 has medium block 12a and the 12b that is arranged in the metallic shield cavity housing 5.
On two facing surfaces of medium block 12a, form electrode 13a and 14a.On two facing surfaces of medium block 12b, form electrode 13b and 14b.By modes such as welding the electrode 13a of medium block 12a is fixedlyed connected with the inside top surface of shielding cavity housing 5, and the electrode 14b of medium block 12b is fixedlyed connected with bottom inner surface with shielding cavity housing 5 by modes such as welding.The electrode 14a of medium block 12a is electrically connected mutually with the electrode 13b of medium block 13b.
For example, the central electrode of coaxial fitting 6 that will be contained in the side of shielding cavity housing 5 with lead is electrically connected with electrode film on the electrode slice 7.Without electrode slice 7, the central electrode of coaxial fitting 6 directly can be linked to each other with 14a with electrode 13b.In this case, because with coupled outside degree maximum, so can form wide-band dielectric filters.
Gou Zao dielectric filter 11 plays the effect of one-level dielectric filter like this, and if the height of these dielectric filters identical, compare the nonloaded Q that it has raising with the dielectric filter of first embodiment.
Can carry out the change shown in Fig. 3 A and 3B for present embodiment.Fig. 3 A is a part excision perspective view, and Fig. 3 B is the profile that the straight line C-C along Fig. 3 A is got.Represent in the present embodiment and the second embodiment components identical with identical label, and no longer be described in detail.
With reference to Fig. 3 A and 3B, will be installed in the shielding cavity housing 5 with medium block 22a and the 22b that the mode identical with 12b with the medium block 12a shown in the medium block 2 shown in Figure 1A and the 1B and Fig. 2 A and the 2B made.The medium block 22c that newly provides is inserted between medium block 22a and the 22b, so constitute dielectric filter 21.In this structure, medium block 22a and 22c form the one-level resonator, and medium block 22b and 22c also form the one-level resonator.Correspondingly, a medium block 22a to 22c who is stacked on another plays the effect of bimodulus dielectric resonator in the dielectric filter shown in Fig. 3 A and 3B 21, thereby can be with dielectric filter 21 as the filter with secondary resonator.According to this structure, to form the mode of one group of n medium block, can constitute dielectric filter with (n-1) individual dielectric resonator level by further overlapping medium block.
The enough thin dielectric-slab of above-mentioned TM bimodulus dielectric resonator utilization with structure shown in Fig. 3 A and 3B of present embodiment reduces gross thickness with the thickness with respect to the traditional short circuit type TM bimodulus dielectric resonator with identical resonance frequency.
In the present embodiment and first embodiment, the shape of medium block is not limited to cylindrical, but can have the shape of any polygon prism.Yet, since above-mentioned about first embodiment, preferably medium block is made cylindrical.In addition, can change the shape of a plurality of medium blocks of the dielectric filter shown in Fig. 2 A and 2B or 3A and 3B.
Below with reference to Fig. 4 A and 4B, the narration third embodiment of the present invention.Fig. 4 A is a part excision perspective view, and Fig. 4 B is the profile that the straight line D-D along Fig. 4 A is got.Represent in the present embodiment and the first or second embodiment components identical with identical label, and no longer be described in detail.
With reference to Fig. 4 A and 4B, dielectric filter 31 has such structure, thereby by the mode that the electrode 33b with the electrode 34a of medium block 32a and medium block 32b separates, makes both mutual electric insulations.Medium block 32a and 32b play the independently effect of resonator mutually, thereby make dielectric filter with the secondary resonator.
To have generally in the Coupling Control plate 39 of the Coupling Control hole 39a that is formed centrally be arranged in the middle of the electrode 33b of the electrode 34a of medium block 32a and medium block 32b.By the size of selecting Coupling Control hole 39a control the resonator that forms by medium block 32a and the resonator that forms by medium block 32b between the degree of coupling.If 39a is bigger in the Coupling Control hole, the degree of coupling is higher between resonator that is formed by medium block 32a and the resonator that formed by medium block 32b so.If 39a is less in the Coupling Control hole, the degree of coupling is lower between resonator that is formed by medium block 32a and the resonator that formed by medium block 32b so.
In present embodiment and first and second embodiment, the shape of medium block is not limited to cylindrical.Yet, since above-mentioned about first embodiment, preferably medium block is made cylindrical.In addition, the shape of two used medium blocks can be different mutually.
Below with reference to Fig. 5 A, 5B and 6, the narration fourth embodiment of the present invention.Fig. 5 A is a part excision perspective view, and Fig. 5 B is the profile that the straight line E-E along Fig. 5 A is got.Fig. 6 comprises the plane graph of the upper and lower part of the dielectric filter shown in Fig. 5 A and 5B.In Fig. 6, omitted the strutting piece 48 shown in Fig. 5 B.In the present embodiment, by place described two dielectric filters 31 in mode side by side, constitute the dielectric filter 41 that forms by the level Four resonator as the 3rd embodiment.Represent in the present embodiment and first, second or the 3rd embodiment components identical with identical label, and no longer be described in detail.
With reference to Fig. 5 A and 5B, dielectric filter 41 has four cylinder shape medium piece 42a to 42d, and electrode pair 43a and 44a, 43b and 44b, 43c and 44c and 43d and 44d form on two principal phase opposites of medium block 42a to 42d respectively.
The structure of each piece of medium block 42a to 42d is identical with the structure of the medium block of above-mentioned first to the 3rd embodiment, and no longer is described in detail.
Make shielding cavity housing 45 by the dielectric material with thermal coefficient of expansion identical with medium block 42a to 42d, and form electrode 45a on its outer surface, therefore, it has and the identical shielding action of metallic shield cavity housing.Because shielding cavity housing 45 has the thermal coefficient of expansion identical with medium block, so there is not the problem of difference between the thermal coefficient of expansion of metal and medium.Form shielding cavity housing by combination upper and lower part separately.In addition, on a side of shielding cavity housing 45, form I/O electrode 46, and isolate with the electrode 45a electricity that on the outer surface of shielding cavity housing 45, forms.I/O electrode 46 is from the bottom surface vertical extent as the shielding cavity housing 45 of installation surface.
One of I/O electrode 46 is by electrode slice 7 and medium block 42b coupling.Medium block 42b and the medium block 42a coupling that evenly separates with medium block 42b.Medium block 42a is again by electrode slice 7 and the medium block 42c coupling adjacent with medium block 42a.In addition, medium block 42c and the medium block 42d coupling that evenly separates with medium block 42c.Medium block 42d is by electrode slice 7 and another I/O electrode 46 couplings.
To be arranged on by the strutting piece 48 that the dielectric material with less dielectric constant is made medium block 42a and 42b the centre so that these medium blocks be evenly spaced from each other.For identical purpose, another strutting piece 48 is arranged on the centre of medium block 42c and 42d.By being partially submerged into the mode of strutting piece 48, making the Coupling Control plate 49 and each strutting piece 48 whole combination that is made of metal.Each Coupling Control plate 49 has and is used between control medium piece 42a and the 42b or the Coupling Control hole 49a of the coupling between medium block 42c and the 42d.
Gou Zao dielectric filter can be used as thickness filter less and that can install with the mounted on surface mode and obtains like this.
On the other hand, can be with the device of all structures as shown in Figure 7 as the resonance frequency that increases each first order and afterbody dielectric resonator.Fig. 7 is the profile with the corresponding dielectric filter 41a in cross section of the dielectric filter shown in Fig. 5 B.
As shown in Figure 7, provide diameter than the little medium block 42e of the medium block 42b that forms the first order and afterbody dielectric resonator and 42d and 42f to replace medium block 42b and 42d.That is, medium block 42e is provided in the first order, and in the end provides the medium block 42f that has with medium block 42e same diameter in the one-level, thereby under the state that works independently, increase the resonance frequency of each first order and afterbody dielectric resonator.
In the present embodiment and first to the 3rd embodiment, the shape of medium block is not limited to cylindrical.Yet, since above-mentioned about first embodiment, preferably medium block is made cylindrical.In addition, the shape that one of can change in a plurality of medium blocks.In the present embodiment, the input and output device is not the coaxial fitting of using such as in first, second or the 3rd embodiment, but surface installing type I/O electrode.Yet in the present embodiment, also can use with first, second or the 3rd embodiment in the coaxial fitting installed of identical mode.Much less, the available I/O electrode structure that is suitable for the present embodiment of mounted on surface replaces as the coaxial fitting in the described dielectric filter of first to the 3rd embodiment.
Below with reference to the Fig. 8 and the 9 narration fifth embodiment of the present invention.Fig. 8 is a part excision perspective view and Fig. 9 is an exploded perspective illustration.Represent in the present embodiment and first, second or the 3rd embodiment components identical with identical label, and no longer be described in detail.
With reference to Fig. 8, the first dielectric filter 51a with first frequency band constitutes dielectric duplexer 51 with the second dielectric filter 51b with second frequency band.
Medium block 52a to 52d as shown in Figure 9 constitutes the first dielectric filter 51a.In dielectric filter 51a, coaxial fitting 56a is coupled with medium block 52b by electrode slice 7, and with medium block 52b and medium block 52a coupling.Medium block 52a is coupled with medium block 52c by electrode slice 7.With medium block 52c and medium block 52d coupling, medium block 52d is coupled with coaxial fitting 56b by electrode slice 7 and as the coil L1 and the capacitor C1 of coalignment.So, form dielectric filter 51a, as shown in Figure 8 with level Four dielectric resonator.
Constitute the second dielectric filter 51b by as shown in Figure 9 medium block 52e to 52h.In dielectric filter 51b, coaxial fitting 56b also is coupled with medium block 52f by electrode slice 7 by capacitor C1 and coil L1 as coalignment.With medium block 52f and medium block 52e coupling.By electrode slice 7 medium block 52e and medium block 52g are coupled.With medium block 52g and medium block 52h coupling, and its medium block 52h is by electrode slice 7 and coaxial fitting 56c coupling.So, form dielectric filter 51b, as shown in Figure 8 with level Four dielectric resonator.
As shown in Figure 9, by the mode of combination upper and lower part separately, constitute shielding cavity housing 55.In each upper and lower part, be formed for holding the recess of medium block 52a to 52h.
With ring earthing plate 60 medium block 52a to 52h is linked to each other with the recessed surfaces electricity of shielding cavity housing 55.
As shown in Figure 9, strutting piece 58 that is used for Supporting Media piece 52a to 52h and the centre that is arranged on medium block group 52a, 52c, 52e and 52g and medium block group 52b, 52d, 52f and 52h by the Coupling Control plate 59 that is inserted in acquisition support between the upper and lower strutting piece 58 will be organized more.
Make strutting piece 58 with material with little dielectric constant.Three strutting pieces 58 form one group, are used for supporting a medium block in the supported at three point mode.In strutting piece 58, form otch 58a, with by electrode slice 7 being clipped in the mode fixed electrode film 7 in the middle of medium block and the strutting piece 58a.
In Coupling Control plate 59, form Coupling Control hole 59a.Select the diameter of Coupling Control hole 59a and shape with between control medium piece 52a and the 52b, between medium block 52c and the 52d, between medium block 52e and the 52f and the coupling between medium block 52g and the 52h.
Can be used as the dielectric duplexer 51 that the little loss thin type duplexer that formed by eight grades of dielectric resonators is constructed like this.
Can reduce dielectric filter 51a and the first order of 52b and the medium block diameter of afterbody of dielectric duplexer 51, as described in the change of the 4th embodiment.
Figure 10 is the profile of dielectric duplexer 61, wherein reduces the first order of each dielectric filter and the diameter of afterbody medium block.The structure of the coaxial fitting of this dielectric duplexer is identical with the structure of the coaxial fitting of the dielectric duplexer 51 shown in Fig. 8 and 9, and repeated description no longer.
As shown in figure 10, with respect to the diameter of other medium block 62a, 62c, 62e and 62g, reduce and the first order of dielectric filter and the diameter of the corresponding medium block 62b of afterbody, 62d, 62f and 62h.
According to the size of these medium blocks, also change the shape of the strutting piece 68a and the ground plate 60a that are used for Supporting Media piece 62b, 62d, 62f and 62h.
In this way, first under the state of working independently that be increased in reaches the resonance frequency with the afterbody dielectric resonator, almost equates mutually with the apparent resonance frequency that guarantees dielectric resonator in each first and second dielectric filter.Much less, the apparent resonance frequency of the dielectric resonator that forms first dielectric filter and the apparent resonance frequency of the dielectric resonator that forms second dielectric filter are set, so that they are different mutually.
Also can be with all structures as shown in figure 11 as making first and second dielectric filters have the structure of different frequency bands.Structure about the coaxial fitting in the structure of the coaxial fitting of as shown in figure 11 dielectric duplexer and the dielectric duplexer 51 shown in Fig. 8 and 9 is identical, and repeated description no longer.
As shown in figure 11, make different with the shape of the medium block 72e to 72h that forms second dielectric filter medium block 72a to 72d that forms first dielectric filter; The diameter of medium block 72a to 72d is littler to the diameter of 72h than medium block 72e, therefore makes first and second dielectric filters have different frequency bands.Though do the diameter of medium block differently in this change, any other various methods that are used to be provided with different frequency bands (for example, making rectangle and cylinder shape medium piece) also all are available.By adding the shape that do not change medium block such as reactance component such as capacitor and inductor or the mode by the cutting medium piece, can make the frequency band of first and second dielectric filters different.
First frequency band of first dielectric filter is used as second frequency band as the frequency acceptance band of receiving filter the mode of the emission band of emission filter, can be with the shared antenna assembly of each dielectric duplexer shown in Fig. 8 to 11 as transmitter-receiver.In addition, can be with first and second dielectric filters as two emission filters or two receiving filters.
Narrate the sixth embodiment of the present invention below with reference to Figure 12.The present embodiment utilization is with dielectric filter shown in Figure 11 identical construction.Represent and identical or corresponding element of element shown in Figure 1 or part or part with identical label, and be not described in detail.
By way of example, will adopt the structure of thin-film multilayer electrode to narrate in the dielectric filter shown in Figure 1 as the 6th embodiment.Much less, the dielectric duplexer that also this thin-film multilayer electrode can be applied to each dielectric filter of second to the 4th embodiment and the 5th embodiment is to obtain dielectric filter or dielectric duplexer with high nonloaded Q.
According to the present invention, basically do not having watt current to flow through for the shielding cavity housing that holds medium block, thereby in shielding cavity housing, basically do not having loss. As a result, can obtain to have dielectric resonator, dielectric filter and the dielectric duplexer of high quality factor q.
According to a second aspect of the invention, a plurality of medium blocks are arranged on the place that generates an electromagnetic field and distribute, thus dielectric resonator, dielectric filter and the dielectric duplexer that can obtain to have high nonloaded Q.
According to a third aspect of the present invention, a plurality of medium blocks are arranged and are spaced from each other along the direction of height, with formation multistage resonant device, thereby obtain reducing of floor space.
According to a fourth aspect of the present invention, use dielectric resonator, dielectric filter and the dielectric duplexer of thin-film multilayer electrode to obtain having higher nonloaded Q.
According to a fifth aspect of the present invention, medium block is made cylindrical, thereby the edge that makes electrode surface with the center on the surface constant distance of being separated by, thereby avoid producing potential difference, therefore avoid at the edge generation current. Therefore, can also further reduce loss in the electrode. As a result, can obtain having the dielectric resonator of high nonloaded Q.
According to a ninth aspect of the present invention, to be used as coupling device by the electrode slice that dieelctric sheet and the electrode that forms on a surface of dieelctric sheet consist of, and can easily obtain the required degree of coupling by the dielectric constant of suitable selection medium and the size of electrode slice.
According to a tenth aspect of the present invention, be increased in the first order under the state of working independently and the resonant frequency of afterbody TM mould dielectric resonator, thereby when resonator forms dielectric filter, the resonant frequency of TM mould dielectric resonator equated.
According to an eleventh aspect of the present invention, make up the 2nd TM mould dielectric filter that above-mentioned a plurality of TM mould dielectric filter has a TM mould dielectric filter of first frequency band with formation and has second frequency band, and first frequency band and second frequency band different, thereby the dielectric duplexer that obtains having high nonloaded Q.
According to a twelfth aspect of the present invention, do the shape of the TM mould dielectric resonator of the shape of the TM mould dielectric resonator that forms a TM mould dielectric filter and formation the 2nd TM mould dielectric filter differently, so that first frequency band and second frequency band are different. Therefore, need not increase for the circuit of mobile frequency band relatively, and in the situation of using the identical TM mould dielectric resonator of shape, need such circuit.
Claims (13)
1. transverse magnetic mode dielectric resonator comprises:
Shielding cavity housing with conductivity; With
At least one is arranged on the medium block in the described shielding cavity housing,
It is characterized in that, on two mutual opposite surfaces of described medium block, form electrode, and will be formed with on it on inner surface that in described two surfaces of described electrode one places described shielding cavity housing.
2. transverse magnetic mode dielectric resonator as claimed in claim 1 is characterized in that, one of a plurality of described medium block are overlapped on another, thereby the electrode that forms on a pair of surface of described medium block at least contacts with each other.
3. transverse magnetic mode dielectric resonator as claimed in claim 1 is characterized in that, one of a plurality of described medium block are overlapped on another, thereby the electrode that forms on a pair of adjacently situated surfaces of described medium block at least relative to each other, and is simultaneously spaced-apart.
4. as the described transverse magnetic mode dielectric resonator of arbitrary claim of claim 1 to 3, it is characterized in that one of electrode that forms is to be formed by the thin-film multilayer electrode that forms by the mode that replaces overlapping thin film conductor and thin film dielectrics at least on described two surfaces of each described medium block.
5. as the described transverse magnetic mode dielectric resonator of claim 1 to 4, it is characterized in that described medium block is columniform.
6. a transverse magnetic mode dielectric filter is characterized in that, comprising:
At least one is as the described transverse magnetic mode dielectric resonator of arbitrary claim of claim 1 to 5; With
The input and output device that is coupled with described transverse magnetic mode dielectric resonator.
7. transverse magnetic mode dielectric filter as claimed in claim 6 is characterized in that, coupling device is arranged on the centre of described transverse magnetic mode dielectric resonator and described input and output device.
8. as claim 6 or 7 described transverse magnetic mode dielectric filters, it is characterized in that, a plurality of transverse magnetic mode dielectric resonators are set, and coupling device is arranged between a plurality of transverse magnetic mode dielectric resonators.
9. as claim 7 or 8 described transverse magnetic mode filters, it is characterized in that described coupling device comprises the electrode slice of being made by dieelctric sheet and the electrode that forms on a surface of described dieelctric sheet.
10. as any described dielectric filter of claim 7 to 9, it is characterized in that, a plurality of described transverse magnetic mode dielectric resonators are set, and in described a plurality of transverse magnetic mode dielectric resonators, with respect to the described resonance frequency of described other transverse magnetic mode dielectric resonator, increase the described resonance frequency of the described first order and afterbody transverse magnetic mode dielectric resonator.
11. a transverse magnetic mode dielectric duplexer, it is characterized in that by combining and form as the described a plurality of transverse magnetic mode dielectric filters of arbitrary claim of claim 6 to 10 described duplexer comprises:
The first transverse magnetic mode dielectric filter with first frequency band; With
The second transverse magnetic mode dielectric filter with second frequency band,
Wherein, described first frequency band and described second frequency band are different.
12. transverse magnetic mode dielectric duplexer as claimed in claim 11, it is characterized in that, make the described shape of the described transverse magnetic mode dielectric resonator that forms the described first transverse magnetic mode dielectric filter different, so that described first frequency band and described second frequency band are different with the described shape of the described transverse magnetic mode dielectric resonator that forms the second transverse magnetic mode dielectric filter.
13., it is characterized in that, the described first transverse magnetic mode dielectric filter is used as emission filter, and the described second transverse magnetic mode dielectric filter is used as receiving filter as claim 11 or 12 described transverse magnetic mode dielectric duplexers.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP228792/96 | 1996-08-29 | ||
| JP08228792A JP3085205B2 (en) | 1996-08-29 | 1996-08-29 | TM mode dielectric resonator, TM mode dielectric filter and TM mode dielectric duplexer using the same |
| JP228792/1996 | 1996-08-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1179019A true CN1179019A (en) | 1998-04-15 |
| CN1151582C CN1151582C (en) | 2004-05-26 |
Family
ID=16881932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB971178003A Expired - Fee Related CN1151582C (en) | 1996-08-29 | 1997-08-29 | Transverse magnetic mode medium resonator and transverse magnetic mode medium filter using it and diplexer |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US6052041A (en) |
| EP (1) | EP0827233B1 (en) |
| JP (1) | JP3085205B2 (en) |
| CN (1) | CN1151582C (en) |
| CA (1) | CA2214259C (en) |
| DE (1) | DE69732201T2 (en) |
| MX (1) | MX9706575A (en) |
| NO (1) | NO320122B1 (en) |
| RU (1) | RU2147388C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682537A (en) * | 2012-08-31 | 2014-03-26 | 罗森伯格（上海）通信技术有限公司 | TM (Transverse Magnetic) mode dielectric filter |
| CN108649310A (en) * | 2018-04-24 | 2018-10-12 | 南通大学 | A kind of individually controllable double-passband filter based on four mould dielectric resonators |
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| JP3085205B2 (en) * | 1996-08-29 | 2000-09-04 | 株式会社村田製作所 | TM mode dielectric resonator, TM mode dielectric filter and TM mode dielectric duplexer using the same |
| DE69833543D1 (en) * | 1997-01-28 | 2006-04-27 | Murata Manufacturing Co | DIELECTRIC RESONATOR, DIELECTRIC FILTER, DIELECTRIC DUPLEX, AND METHOD FOR PRODUCING A DIELECTRIC RESONATOR |
| JP3750335B2 (en) * | 1998-01-05 | 2006-03-01 | 株式会社村田製作所 | Band stop dielectric filter, dielectric duplexer, and communication device |
| JP3634619B2 (en) * | 1998-04-06 | 2005-03-30 | アルプス電気株式会社 | Dielectric resonator and dielectric filter using the same |
| US20040036557A1 (en) * | 2000-08-29 | 2004-02-26 | Takehiko Yamakawa | Dielectric filter |
| JP3804481B2 (en) * | 2000-09-19 | 2006-08-02 | 株式会社村田製作所 | Dual mode bandpass filter, duplexer, and wireless communication device |
| US6507252B1 (en) * | 2001-06-21 | 2003-01-14 | Thinh Q. Ho | High rejection evanescent MIC multiplexers for multifunctional systems |
| US6812808B2 (en) * | 2001-09-13 | 2004-11-02 | Radio Frequency Systems, Inc. | Aperture coupled output network for ceramic and waveguide combiner network |
| CN101040403A (en) * | 2004-09-09 | 2007-09-19 | 费尔特尼克控股有限公司 | Multiband filter |
| JP2008028836A (en) | 2006-07-24 | 2008-02-07 | Fujitsu Ltd | Superconducting filter device and manufacturing method thereof |
| EP2065967B1 (en) * | 2007-11-30 | 2014-06-04 | Alcatel Lucent | Bandpass filter |
| CN102136620B (en) * | 2010-09-03 | 2013-11-06 | 华为技术有限公司 | Transverse magnetic mode dielectric resonator, transverse magnetic mode dielectric filter and base station |
| CN104377405A (en) * | 2013-08-13 | 2015-02-25 | 迈特通信设备（苏州）有限公司 | Method for installing and fixing resonator in filter |
| GB201508457D0 (en) * | 2015-05-17 | 2015-07-01 | Isotek Microwave Ltd | A microwave resonator and a microwave filter |
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| US2890422A (en) * | 1953-01-26 | 1959-06-09 | Allen Bradley Co | Electrically resonant dielectric body |
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| JPS60145704A (en) * | 1984-01-10 | 1985-08-01 | Fujitsu Ltd | Dielectric filter |
| US4706052A (en) * | 1984-12-10 | 1987-11-10 | Murata Manufacturing Co., Ltd. | Dielectric resonator |
| JPS6271305A (en) * | 1985-09-24 | 1987-04-02 | Murata Mfg Co Ltd | Dielectric resonator |
| JPS63266903A (en) * | 1987-04-23 | 1988-11-04 | Murata Mfg Co Ltd | Dielectric resonator |
| CA1251835A (en) * | 1988-04-05 | 1989-03-28 | Wai-Cheung Tang | Dielectric image-resonator multiplexer |
| JPH0252501A (en) * | 1988-08-16 | 1990-02-22 | Murata Mfg Co Ltd | Dielectric filter |
| JPH0319404A (en) * | 1989-06-15 | 1991-01-28 | Fujitsu Ltd | Coupling structure |
| CA2048404C (en) * | 1991-08-02 | 1993-04-13 | Raafat R. Mansour | Dual-mode filters using dielectric resonators with apertures |
| JP3089666B2 (en) * | 1993-08-27 | 2000-09-18 | 株式会社村田製作所 | High frequency transmission line, high frequency resonator, high frequency filter and high frequency band elimination filter |
| US5712605A (en) * | 1994-05-05 | 1998-01-27 | Hewlett-Packard Co. | Microwave resonator |
| JP3569995B2 (en) * | 1995-03-08 | 2004-09-29 | 株式会社村田製作所 | TM dual mode dielectric resonator and high frequency band pass filter device |
| SE506313C2 (en) * | 1995-06-13 | 1997-12-01 | Ericsson Telefon Ab L M | Tunable microwave appliances |
| JP3603419B2 (en) * | 1995-10-18 | 2004-12-22 | 株式会社村田製作所 | TM dual mode dielectric resonator and high frequency band pass filter device |
| JPH09199911A (en) * | 1996-01-23 | 1997-07-31 | Murata Mfg Co Ltd | Thin film multi-layer electrode, high frequency resonator and high frequency transmission line |
| JP3085205B2 (en) * | 1996-08-29 | 2000-09-04 | 株式会社村田製作所 | TM mode dielectric resonator, TM mode dielectric filter and TM mode dielectric duplexer using the same |
| JP3405140B2 (en) * | 1996-12-11 | 2003-05-12 | 株式会社村田製作所 | Dielectric resonator |
-
1996
- 1996-08-29 JP JP08228792A patent/JP3085205B2/en not_active Expired - Fee Related
-
1997
- 1997-08-19 DE DE69732201T patent/DE69732201T2/en not_active Expired - Lifetime
- 1997-08-19 EP EP97114284A patent/EP0827233B1/en not_active Expired - Lifetime
- 1997-08-27 CA CA002214259A patent/CA2214259C/en not_active Expired - Fee Related
- 1997-08-28 NO NO19973967A patent/NO320122B1/en not_active IP Right Cessation
- 1997-08-28 MX MX9706575A patent/MX9706575A/en not_active IP Right Cessation
- 1997-08-28 RU RU97114787A patent/RU2147388C1/en not_active IP Right Cessation
- 1997-08-29 US US08/924,040 patent/US6052041A/en not_active Expired - Lifetime
- 1997-08-29 CN CNB971178003A patent/CN1151582C/en not_active Expired - Fee Related
-
2000
- 2000-02-16 US US09/505,633 patent/US6255914B1/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682537A (en) * | 2012-08-31 | 2014-03-26 | 罗森伯格（上海）通信技术有限公司 | TM (Transverse Magnetic) mode dielectric filter |
| CN108649310A (en) * | 2018-04-24 | 2018-10-12 | 南通大学 | A kind of individually controllable double-passband filter based on four mould dielectric resonators |
| CN108649310B (en) * | 2018-04-24 | 2019-12-13 | 南通大学 | Independent controllable dual-passband filter based on four-mode dielectric resonator |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2147388C1 (en) | 2000-04-10 |
| JPH1075103A (en) | 1998-03-17 |
| JP3085205B2 (en) | 2000-09-04 |
| EP0827233A3 (en) | 2000-03-22 |
| DE69732201T2 (en) | 2005-12-22 |
| US6052041A (en) | 2000-04-18 |
| US6255914B1 (en) | 2001-07-03 |
| MX9706575A (en) | 1998-02-28 |
| EP0827233B1 (en) | 2005-01-12 |
| NO973967L (en) | 1998-03-02 |
| NO320122B1 (en) | 2005-10-31 |
| CA2214259A1 (en) | 1998-02-28 |
| CA2214259C (en) | 2001-03-13 |
| CN1151582C (en) | 2004-05-26 |
| NO973967D0 (en) | 1997-08-28 |
| DE69732201D1 (en) | 2005-02-17 |
| EP0827233A2 (en) | 1998-03-04 |
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